<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<script type="text/javascript">
	
	function getUrlParam(name){
			     var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)");//构造一个含有目标参数的正则表达式对象
			     var r = window.location.search.substr(1).match(reg);//匹配目标参数
			     if (r != null) return unescape(r[2]); return null;//返回参数值
		}
	
	localStorage.setItem("userInfo",getUrlParam("u"))
</script>
</head>
<body>
	<button>确定登录吗？</button>
</body>
</html>